. ♪ the technology may be hard to imagine. but why you would want it... is not. the 2014 e-class. it doesn't just see the future. it is the future. . >>> a police dog is recovering from surgery after being injured in training. police say the dog suffer aid spinal injury and internal damage when he fell off a ledge monday night. officers say the surgery went well and he seems alert and able to move. while on duty he has helped police capture several wanted suspects and find thousands of pounds of drugs. >> social media helped citizens and authorities work together in boston to bring an end to the high terror this week. facebook and twitter helped spread the word of the bombings and just a few days later people turned again to it to make public the pictures of both suspects. further videos and tweets from the suspects own social media accounts painted a picture of who they were and where they might be. >> boston, social media becomes a record of their activity. it's really a tracking record of the way you think, the way you act and a lot of times the things you do. >> residents said